Added activity resource
Merge pull request #403 from isuftin/master

Wired up session service to UI.
Modified Activity to correct table creation issue
* also removed some unused imports
Merge pull request #401 from jiwalker-usgs/master

this should be fine now, need to test on dev
Hooked up ranking view sort
* unresolved issue, items not touched don't show up
Merge pull request #404 from jiwalker-usgs/master

Sorting by popularity
Merge branch 'master' of https://github.com/isuftin/coastal-hazards
Updated to wire up Rank so it works properly with queries